Electric lamp.



C. E. GODLEY.

ELECTRIC LAMP.

APPLICATiON men SEPT. 1|. I9l6.

1 ,283,73 1 Patented Nov. 5, 1918.

2 SHEETS-SHEET wwwm if, CMMWQLQQ AM /g.

C. E. GODLEY.

ELECTRXC LAMP.

APPUCATHN min SEPT-H. I916.

1 ,283,73] Patented Nov. 5, 1918.

2 SHEETS-SHEET 2.

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UNITED STATES PATENT OFFICE.

0114335218 E. GDDLEY, F DETROIT, IIGHIGLN, 58816808 T0 mom um 30m CORPORATION, OF DETROIT, IIUEIGLN, A commuter: 0'! m YURI.

Specification of Letters Patent.

Patented Nov. 5, 1913.

Application filed icptenbcr ll, 19". Serial No. 110,385.

To all whom it may concern:

Be it known that I, Cannons E. Gunner,

:a citizen of the United States, and residing at Detroit, in the county of Wayne and State of Michigan, have invented a new and Improved Electric Lamp, of which the following is a specification.

This invention relates to electric lamps, to the bulb mountings therefor, to the coupiings for the electric circuits, and particular vided with a switch, and its obgect is provide a lamp that can be easily ad3usted, that will be simple in construction, and that will not get out of order with ordinary care. This construction is especially adu tahted for electric headlights and search lig its for launches and automobiles, although the details thereof may be generally employed.

This invention consists, in combination with a novel coupling sleeve and means to hold it. substantially rigidly in position; of a plug extending into one end 0 the sleeve and stationary relative thereto and ltVlIlg one or two contact posts, of a scco d plug extendin into the other end of the sleeve and revo ublc therein and having the same number of conthcts as the first, the contact or contacts of one of the plugs being spr111gpressed toward the other plug, and means to turn the revoluble' )lug within the sleeve so as to engage and isenguge the contacts at will. It also consists in employing u collar on the outside of the coupling sleeve and u. pin extendin through a slot in said sleeve from the co nr into the movable dog to turn it. It further consists in so torming the 'slot in the cou ling sleeve that the movable plug and on] or will be held in either of two predetermined positions. It further consists in a novel focusing device for the lamp bulb, and in the details of construction illustrated in the accompany ng drawings and particularly pointed out m thc claims.

In the accompanying druwiufih. Figure l is a central section of this imp 'd'vcd search light. Fig. 2 is a longitudinal section of u ,connector. F ig; 3 is an elevation of the coupling sleeve and of the end of a plug of this connector. Fig. 4-is an end elevation of the connector. Fig. is a section on the line 5-5 of Fig. 3.

Similar reference characters refer like parts throughout the several views.

In Fig. 1, the casing 1 of the lamp is v to the quick detachable coupling pro-' shown to receive the lens rin 2: which presses the lens 3 against the poo ing ring 4 carried in a groove in the outer flange 5 of the reflector 6. A handle 7 is formed on the casing and within it is revolubly mounted a screw 8 having a. knob 9 at its outer end. A coupling sleeve 10 is slidable in a cylindrical flange 12 at the rear end of the re flector, which flange has a horizontal slot 13 to receive the bar 14 secured to the sleeve 10, whereby the sleeve is prevented from turning. A lam bulb 15 of any desired type is mounted in I: e front end of the sleeve, while the well known insulatin in 16 is provided with contacts to wfiic li tie wires 17 and 18 are joined by means of the screwslil; Th: rear end 20 of the bar 14 is turned in and threaded to receive the screw 8. A pin 22 may be used to prevent the screw being turnc entirely out of th hole in the end 20. Aspring 23 around the screw 8 acts as a. brake to restrain the screw from turning. It will be seen that this simple mechanism permits the lamp bulb to be perfectly focuscd.

The casing is shown formed with u cylindrical flange 25 within which the coupling sleeve 26 is securely held by means of a circ1 'nferential spring 27 one end of which lies in a notch in the flange 25 and has an inwardly turned lip 28 that extends into n. notch in the coupling sleeve. This spring can easily be removed to release the coupling sleeve.

The well known pin .29 of insulating mu leriul isprovided wit] three pins 30 that are adapted to engage in the bayonet slots 3132 in the sleeve 26 in the usual manner. This plug has metal conductor cores 83 in which the conductor posts 84 are slidnble,

being normally held out by the springs 85: e

A second plug 36 of insulating material is provided with stationary conductor cuts 87 and is rcvoluble and slidable in the s eeve 26, being held therein against the pressure of the posts 34 and springs 35 by means of u.

pin 38 that passes through the curved slot I When the parts are in the positions shown in Fig. 2, the springs 35 and post 34 will tend to press the plu 36 out of the sleeve 26,

"which movement W1 l-be regulated by the pin 38 in the slot 39: Because of the curvature of this slot and the seats at its ends,

movement of thepin 38 out of either of these seats is only possible upon application of considerable turning force to the collar 40. When the pin 38 is in the seat at one end of the slot, the posts 34 and 37 will eneasily operated.

In case the casing 1 of the lamp is grounded, only one wire 17 18 is necessary. and therefore one of each of the parts 33, 34, 35, 37 and 42 may be omittec.

A boss of sheet metal maybe secured to or formed on the casing 1 and have a flat circular'end or top 51. A bolt 52 having a nut 53. extends through a hole in the part 51 and through a spring washer 54. a flange 55 on the bracket 56 and a second washer 57. i This construction permits the 1am to be turned on the bolt 52 as a pivot.

The bracket 56 has a secondflange 58-at right angles to the first and through this and through the flange 59 on the support 60 extends a bolt 61 having a nut 62. A sprin washer may also be placed under the hem of this bolt. A jaw 63 on this support may engage the bar 64, a second jaw 65 and bolt 66 completing the enga ement. It will therefore be seen that t e lamp may be swung in a circle about the bolt 61 and iii acircle at right angles to thefirst about; the bolt 5:2, the combination of the two movements permitting the beam of light from the bulb 15 to be thrown in substantially every direction.

Many changes in the details of construction may be made by lampmakers without departing from the spirit of myinvention as expressed in the claims.

. l. Therombination of a cylindrical coupling sleeve, a 'lamp bulb mounted in oneend thereof, a bar secured to the sleeve and olubly mounted in ing to the socket and having an inwardly turned free end provided with a threaded hole, a casing surrounding the lamp bulb and having a hollow extension, a screw mounted in said extension and in said hole in the bar, and a compression spring on the screw en aging the end of the bar and the end of t e extension.

tor sleeve and slidable in the notch in thefiange on the reflector which thereby prevents the sleeve from turning said bar be ing formed with a threadedholc, a screw mounted insaid hollow extension on the casing and screwed into the threaded hole in the bar, a knob on the outer end'of the screw whereby it may be turned'to slide the sleeve,

and means to restrain the movement of the screw.

3. In a lamp, the combination of a lamp casing having'a hollow central extension, a reflector mounted in the casing and having a central opening, a lamp socket. slidable in said opening .a rearwardly extendin :rbar secured to tie socket and having an inwardly turned rear. threaded hole, a screw centrally and revthe extension oftho casing and engaging in the threaded hole 1' ".the bar,'and a compression spring mounts on the screw.

4. In an electric lamp, the combination of a casing and'a" universal mounting there for hollow central extension on the casin adapted to serve as a handle to swing the casin a, reflector in said casing and a' rear wardly extending sleeve centrally mounted thereon, a'focusing screw revolubly mounted -in said handle, a spring on said sore within the handle to restrain the screw front turning, a lamp socket slidable in the sleeve on the reflector, and a threaded bar connectto said; screw whereby end provided with a.

the turning of the screw may more" the socket.

CHARLES E. GODLEYI 

